5/22/2019 - Darien Police Department Traffic Advisory:

Darien Police Department Traffic Advisory


May 22, 2019



What/Where: The US 1 overpass over I-95 in the area of Exit 9 in Stamford is being completely replaced over two weekends.  The replacement bridge structure itself has been being constructed right next to the highway for many months and is now ready to be installed.  This process, known as Accelerated Bridge Construction (ABC) allows the impact on the roadways to be limited to two weekends rather than enduring two years of standard bridge construction.  Six hundred and twenty-eight cubic yards of concrete weighing over 1.5 million pounds was used to build the two bridge spans. About 32 miles of rebar was installed within the newly constructed bridge spans, and new structural steel was used to create the new bridge superstructures.  Each individual span to be lifted and set into place weighs between approximately 1.6 million pounds, and 1.8 million pounds. 


When: The Darien Police Department wishes to advise all motorists and residents of expected significant and severe traffic delays occurring Friday May 31st (PM) through Monday June 3rd (early AM) and again from Friday June 7th (PM) through Monday June 10th (early AM).  MOTORISTS ARE STRONGLY ADVISED TO AVOID THE AREA DURING THE CLOSURE TIME FRAMES TO AVOID HEAVY TRAFFIC DELAYS.


Impact to Town of Darien Traffic: Although no construction is occurring in Darien, the sheer scope of this project, the major impact to I-95 through Darien and the proximity of the project to Darien town line makes it clear that there will be significant traffic congestion and potential significant delays on local Darien roadways during all hours of these two weekends.  US 1 (Post Road) in Stamford will be closed and a detour through Hamilton Ave. and Courtland Ave. will be set up. I-95 will not be “completely closed” but will be severely restricted as to be “effectively closed” during much of the weekend(s).  The Darien Police Department expects very heavy traffic on most of our major surface streets (Boston Post Road, West Ave., Mansfield Ave., Hoyt Street, Tokeneke Road, etc.) as motorists seek alternates to I-95. 


What Have We Done To Prepare For This? The Darien Police Department has worked closely with the CT Department of Transportation and all Emergency Services in neighboring towns to coordinate our preparation for this project.  We will have additional police traffic personnel working around the clock dedicated solely to traffic management at Darien intersections and areas where delays are to be expected.  We expect a large amount of traffic to be exiting I-95 at Exit 11 (especially S/B) onto US 1. 


How You Can Help: Please consider avoiding the area during these weekends and try to limit traffic trips if possible.  Please allow for significant extra time if you must drive in lower Fairfield County during these weekends. Bear with us and please realize that enduring two weekends of epic delays are far superior to two years of ongoing traffic congestion and frustration. 


Note:  There will be live streaming video feeds of construction during the weekends when the bridge is installed on the project website.  This live feed, and complete information on the project, can be found at   


All inquiries concerning the Town of Darien’s involvement and preparation for this project can be directed to Capt. Don Anderson at or by phone at (203) 662-5312.